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Wŏnʾgyŏk Kyoyuk Haksul Hoeŭi (5th 1987 Hanʾguk Pangsong Tʻongsin Taehak)
Wŏnʾgyŏk kodŭng kyoyuk e issŏsŏ ŭi chilchŏk suwŏlsŏng chʻugu